Preheat the oven to 170°C.
Melt the 100 g of chocolate in a metallic bowl over hot water (Bain-marie). Set aside to cool off. Check that the chocolate remains liquid though.
In a blender, mix the 600 g silken tofu and 30 g cocoa powder until it is smooth and silky.
Pour a little bit of the silken tofu/cocoa mix into the melted chocolate and stir vigorously. This part is important to avoid having crystallised chocolate lumps in the cake - we want it to me creamy! Keep on adding a little bit of the silken tofu to the chocolate mix until its texture has become more or less similar to the texture of the silken tofu/cocoa mix.
Now pour in the rest of the silken tofu.
Add 120 g of sugar and 40 g of sifted corn starch to the mix and stir until everything is well incorporated.
Your filling is done! Pour it on top of the prepared cheesecake base. It should ideally not go higher than the dough goes up on the walls. If it is don't worry - the cake will still work! But you will need to be more careful when removing the cake ring or springform after baking.
Bake at 170°C for approximately one hour. Check if it's done by opening the oven door and (using a kitchen towel!) slightly move the cake ring. It is done when the middle is still a little bit wobbly.
Let the cake cool for 20-30 minutes. Then remove the cake ring. Before lifting the ring or opening the springform make sure you pass a small spatula or a flexible knife between the cake and the cake ring to remove any cake that might be sticking to the ring. This is especially important if your filling is touching the cake ring directly.
Let the cheesecake cool down entirely, whip up some (vegan) whipping cream and enjoy!